Had a flat on way in this morning. 2nd flat in 3 weeks on new armadillos. F'n staples.......

Anyways, being cold and dark Im much more layered up, which makes me much less gracefull it seems in changing a tube. And i ended up getting grease/grunge on the front of my bright yellow Jacket.

Its a Marmot Oracle jacket with Precip material. The grease is....well black and greasy

Anyone have any good tips for removing it ?